Create tutorial on using constraints inside `<footprint />`

[seveibar]

Example code: https://github.com/tscircuit/cli/blob/main/example-project/src/KeyswitchSocket.tsx

[homie-gg[bot]]

Here are some pull requests that might be helpful reference for this task:

• initial constraint solving implementation for footprints, introduce PrimitiveContainers
• allow holes to be constrained, add typechecking on CI, implement ydist constraint solving, fix edgeToEdge constraint offset issue
• implement sameX/sameY, refactor constraint reference code in prepartion for edge selectors

[TSP06]

@seveibar assign please